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Finding the Fourth Proportional to 15,089.80, 20,826.42 and 8,802.17

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Solution

The fourth proportional to 15,089.80, 20,826.42 and 8,802.17 is: 12,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.80 : 20,826.42 = 8,802.17 : x
  2. Step 2: Convert to fraction form
    15,089.80/20,826.42 = 8,802.17/x
  3. Step 3: Cross multiply
    15,089.80x = 20,826.42 × 8,802.17
  4. Step 4: Simplify right side
    15,089.80x = 183,317,689.33
  5. Step 5: Solve for x
    x = 183,317,689.33/15,089.80
  6. Step 6: Final answer
    x = 12,148.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.